#ifndef _ATMMPC_H_
#define _ATMMPC_H_

#include <linux/atmapi.h>
#include <linux/atmioc.h>
#include <linux/atm.h>

#define ATMMPC_CTRL _IO('a', ATMIOC_MPOA)
#define ATMMPC_DATA _IO('a', ATMIOC_MPOA+1)

#define MPC_SOCKET_INGRESS 1
#define MPC_SOCKET_EGRESS  2

struct atmmpc_ioc {
	int dev_num;
	__be32 ipaddr;		/* the IP address of the shortcut    */
	int type;		/* ingress or egress                 */
};

typedef struct in_ctrl_info {
	uint8_t Last_NHRP_CIE_code;
	uint8_t Last_Q2931_cause_value;
	uint8_t eg_MPC_ATM_addr[ATM_ESA_LEN];
	__be32 tag;
	__be32 in_dst_ip;	/* IP address this ingress MPC sends packets to */
	uint16_t holding_time;
	uint32_t request_id;
} in_ctrl_info;

typedef struct eg_ctrl_info {
	uint8_t DLL_header[256];
	uint8_t DH_length;
	__be32 cache_id;
	__be32 tag;
	__be32 mps_ip;
	__be32 eg_dst_ip;	/* IP address to which ingress MPC sends packets */
	uint8_t in_MPC_data_ATM_addr[ATM_ESA_LEN];
	uint16_t holding_time;
} eg_ctrl_info;

struct mpc_parameters {
	uint16_t mpc_p1;	/* Shortcut-Setup Frame Count    */
	uint16_t mpc_p2;	/* Shortcut-Setup Frame Time     */
	uint8_t mpc_p3[8];	/* Flow-detection Protocols      */
	uint16_t mpc_p4;	/* MPC Initial Retry Time        */
	uint16_t mpc_p5;	/* MPC Retry Time Maximum        */
	uint16_t mpc_p6;	/* Hold Down Time                */
};

struct k_message {
	uint16_t type;
	__be32 ip_mask;
	uint8_t MPS_ctrl[ATM_ESA_LEN];
	union {
		in_ctrl_info in_info;
		eg_ctrl_info eg_info;
		struct mpc_parameters params;
	} content;
	struct atm_qos qos;
} __ATM_API_ALIGN;

struct llc_snap_hdr {
	/* RFC 1483 LLC/SNAP encapsulation for routed IP PDUs */
	uint8_t dsap;		/* Destination Service Access Point (0xAA)     */
	uint8_t ssap;		/* Source Service Access Point      (0xAA)     */
	uint8_t ui;		/* Unnumbered Information           (0x03)     */
	uint8_t org[3];		/* Organizational identification    (0x000000) */
	uint8_t type[2];	/* Ether type (for IP)              (0x0800)   */
};

/* TLVs this MPC recognizes */
#define TLV_MPOA_DEVICE_TYPE         0x00a03e2a

/* MPOA device types in MPOA Device Type TLV */
#define NON_MPOA    0
#define MPS         1
#define MPC         2
#define MPS_AND_MPC 3

/* MPC parameter defaults */

#define MPC_P1 10		/* Shortcut-Setup Frame Count  */
#define MPC_P2 1		/* Shortcut-Setup Frame Time   */
#define MPC_P3 0		/* Flow-detection Protocols    */
#define MPC_P4 5		/* MPC Initial Retry Time      */
#define MPC_P5 40		/* MPC Retry Time Maximum      */
#define MPC_P6 160		/* Hold Down Time              */
#define HOLDING_TIME_DEFAULT 1200	/* same as MPS-p7 */

/* MPC constants */

#define MPC_C1 2		/* Retry Time Multiplier       */
#define MPC_C2 60		/* Initial Keep-Alive Lifetime */

/* Message types - to MPOA daemon */

#define SND_MPOA_RES_RQST    201
#define SET_MPS_CTRL_ADDR    202
#define SND_MPOA_RES_RTRY    203	/* Different type in a retry due to req id         */
#define STOP_KEEP_ALIVE_SM   204
#define EGRESS_ENTRY_REMOVED 205
#define SND_EGRESS_PURGE     206
#define DIE                  207	/* tell the daemon to exit()                       */
#define DATA_PLANE_PURGE     208	/* Data plane purge because of egress cache hit miss or dead MPS */
#define OPEN_INGRESS_SVC     209

/* Message types - from MPOA daemon */

#define MPOA_TRIGGER_RCVD     101
#define MPOA_RES_REPLY_RCVD   102
#define INGRESS_PURGE_RCVD    103
#define EGRESS_PURGE_RCVD     104
#define MPS_DEATH             105
#define CACHE_IMPOS_RCVD      106
#define SET_MPC_CTRL_ADDR     107	/* Our MPC's control ATM address   */
#define SET_MPS_MAC_ADDR      108
#define CLEAN_UP_AND_EXIT     109
#define SET_MPC_PARAMS        110	/* MPC configuration parameters    */

/* Message types - bidirectional */

#define RELOAD                301	/* kill -HUP the daemon for reload */

#endif /* _ATMMPC_H_ */
